rules for movement underwater

[Viconus]

I have read the rules for swimming and drowning, and I understand that characters can move 1/4 the number of normal squares swimming as simple move actions. In the Whispering Cairn, what if they want to just walk on the ground in the shower room - is it the same rules as swimming?

[UltimaGabe]

It is. You may rule that they don't need to make swim checks to do so (or they still do but the DCs are easier), but that would be house-rule territory.